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Comparisons · Robot Lawn Mowers4 robots · checked 2 Oct 2026

A situation

Robot mowers for detached lawns: zones, transport paths, and second docks

A driveway splits the front and back lawns. The question is how many zones each mower holds, how it crosses between them, and whether a second dock is on offer.

Four robot mowers in a front yard split by a driveway: one drives across the concrete between the two lawns, a second noses onto it behind, and two more cut the lawns on either side.

This page checks

  1. Zones it holdsHow many separate lawns it can store
  2. Crossing between lawnsChannels or paths joining zones
  3. A second dockWhether a spare is listed
Segway Navimow X4

Segway

Navimow X4

IIIConditional71Strong
$2,499list
Where to buy

Firmware V4.3.0 adds quieter mowing and smoother turns

Greenworks AiMowbot C20Z

Greenworks

AiMowbot C20Z

IIIConditional73Strong
$1,299.99list
Where to buy

Greenworks' own US page covers the C20; the C20Z was found on its Canadian site

Mammotion YUKA 3000

Mammotion

YUKA 3000

IVEnvironmental67Capable
$2,099list
Where to buy

Sold at Home Depot and Amazon; Mammotion's US YUKA page now shows the YUKA mini 2

Mammotion app update adds multi-zone scheduling and RTK signal diagnostics for YUKA 3000

Mammotion Yuka 1500

Mammotion

YUKA 1500

IIIConditional76Strong
$1,599list
Where to buy

Mammotion's US YUKA page now shows the YUKA mini 2

Vision calibration firmware improves edge and obstacle detection

Full specifications18 figures on record · 17 differ
Figure
Navimow X4
AiMowbot C20Z
YUKA 3000
YUKA 1500
List price
Navimow X4$2,499
AiMowbot C20Z$1,299.99
YUKA 3000$2,099
YUKA 1500$1,599
Released
Navimow X4Feb 2026
AiMowbot C20ZMar 2026
YUKA 3000Jan 2025
YUKA 1500Jul 2024
Boundary
Navimow X4Wire-free, EFLS 3.0 network RTK with 360-degree VSLAM
AiMowbot C20ZRTK with vision, wire-free
YUKA 3000Wire-free, RTK-GNSS with camera vision
YUKA 1500Wire-free, RTK satellite virtual boundary
Steepest slope
Navimow X484%
AiMowbot C20Z45%
YUKA 300045%
YUKA 150053%
Rated lawn area
Navimow X4Not on record
AiMowbot C20Z21,800 sq ft
YUKA 300032,700 sq ft
YUKA 150016,100 sq ft
Cutting width
Navimow X417 in
AiMowbot C20Z8 in
YUKA 300012.6 in
YUKA 150012.6 in
Cutting height
Navimow X40.8-4 in
AiMowbot C20Z0.8-3.5 in
YUKA 3000Not on record
YUKA 15001.2-3.9 in
Drive
Navimow X4Four-wheel drive
AiMowbot C20ZFour-wheel drive
YUKA 3000Rear-wheel drive
YUKA 1500Rear-wheel drive
Blades
Navimow X4Dual-disc, 12-blade deck
AiMowbot C20ZNot on record
YUKA 30002 cutting discs
YUKA 1500Pivoting razor blades, replace-only consumables
Weight
Navimow X463.7 lb
AiMowbot C20Z26.2 lb
YUKA 300037.9 lb
YUKA 150036.2 lb
Runtime
Navimow X4110 min
AiMowbot C20Z60 min
YUKA 3000130 min
YUKA 1500150 min
Charge time
Navimow X490 min
AiMowbot C20Z50 min
YUKA 3000220 min
YUKA 150090 min
Battery capacity
Navimow X4Not on record
AiMowbot C20Z86 Wh
YUKA 3000Not on record
YUKA 150097 Wh
Noise
Navimow X468 dB
AiMowbot C20Z54 dB
YUKA 3000Not on record
YUKA 150060 dB
Navigation
Navimow X4EFLS 3.0 tri-frequency Network RTK with 360 degree VSLAM and visual-inertial odometry, app-drawn virtual boundaries (no perimeter wire, no reference station), VisionFence 360 degree RGB and time-of-flight obstacle recognition, rain-pause scheduling, lift and tilt cutoffs
AiMowbot C20ZRTK GPS + on-board vision + 4WD drive.
YUKA 3000RTK-GNSS + camera vision with AI obstacle avoidance
YUKA 1500RTK satellite positioning + 3D stereo vision obstacle avoidance
Connectivity
Navimow X4Wi-Fi, Matter
AiMowbot C20ZWi-Fi, Bluetooth, Cellular
YUKA 3000Wi-Fi, Cellular
YUKA 1500Wi-Fi, Bluetooth, Cellular
Size
Navimow X424 × 33.5 × 13.8 in
AiMowbot C20Z19.9 × 25.7 × 12.3 in
YUKA 300025.5 × 20.4 × 13 in
YUKA 150020.4 × 25.5 × 13 in
The same on all four
Battery type
Navimow X4Li-ion
AiMowbot C20ZLi-ion
YUKA 3000Li-ion
YUKA 1500Li-ion
Add a robot124 robot lawn mowers on record+ Add a robot124 robot lawn mowers on record

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Front and back

What a split yard asks of each one

The Navimow X4 is listed with 120 zones by a hands-on review, the YUKA 3000 with 30 by a retail listing, and the YUKA 1500 with 10 by Mammotion. Greenworks gives no zone count for the C20Z. No second dock was found for any of the four.

SegwayNavimow X4
GreenworksAiMowbot C20Z
MammotionYUKA 3000
MammotionYUKA 1500
1Zones it holdsSeparate mowing areas saved
Navimow X4

120zones

Counts no-go areas too. Stated for the X430 in the review.

Hands-on review
AiMowbot C20Z

Not found

Greenworks says the maximum depends on the model; no number found.

Greenworks Canada product page
YUKA 3000

30zones

From a retail listing title. Not seen on a Mammotion page.

Retail listing title
YUKA 1500

10zones

Mammotion's page covers the YUKA 1500 and YUKA 2000.

Mammotion support specs page
2Crossing between lawnsJoined by a path or channel
Navimow X4Drives itself along a path

A review says a grass or paved path between zones lets it drive across itself. Fenced yards may need a hand.

Hands-on review of the X4 series
AiMowbot C20Z

Not found

The C20 page lists transport paths; none found for the C20Z, which needs a passage 19.7 in high by 39.4 in wide.

Greenworks C20 and C20Z pages
YUKA 3000Channel set in app

Mammotion's guide says zones can be split by a path or driveway. You drive a channel between them in the app.

Mammotion guide for its mowers
YUKA 1500Channel set in app

Same Mammotion guide and app steps. Not confirmed on a YUKA 1500 page.

Mammotion guide for its mowers
3A second dockSpare charging base listed
Navimow X4

Not found

Maker pages loaded only in part. The review does not mention one.

Searched maker pages and a review
AiMowbot C20Z

Not found

Product page lists one station and says it can be moved if you update its position in the app.

Greenworks Canada product page
YUKA 3000

Not found

No second-dock listing found on the pages searched.

Searched Mammotion pages
YUKA 1500

Not found

No second-dock listing found on the pages searched.

Searched Mammotion pages

Same on all four: a wire-free boundary and app-drawn zones. No second dock found on any page read.

Beside a garage wall, a robot mower waits on the lawn next to its only charging station, which has been pulled up and set down on the grass beside the flattened patch where it stood, its pegs and a mallet lying by it.

Your home

How each one fits a home like yours

Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.

Fit check

Describe your home

Pick what applies. Each robot answers from its own record.

Yard size
Terrain
Boundary setup
Across what you setEach robot’s own Fit Check
Navimow X4Set a condition
AiMowbot C20ZSet a condition
YUKA 3000Set a condition
YUKA 1500Set a condition
Yard sizeNot set
Navimow X4Not set
AiMowbot C20ZNot set
YUKA 3000Not set
YUKA 1500Not set
TerrainNot set
Navimow X4Not set
AiMowbot C20ZNot set
YUKA 3000Not set
YUKA 1500Not set
Boundary setupNot set
Navimow X4Not set
AiMowbot C20ZNot set
YUKA 3000Not set
YUKA 1500Not set

Everything else

Where they land among 128 robot lawn mowers

Only the measures on which these four differ. The bar is the whole category; the block is the typical middle half; the tick is the median.

WeightRecord figure
Navimow X4

63.7 lb
AiMowbot C20Z

26.2 lb
YUKA 3000

37.9 lb
YUKA 1500

36.2 lb

13typical 25.1–38 · median 30.288.2
List priceMaker list price
Navimow X4

$2,499
AiMowbot C20Z

$1,300
YUKA 3000

$2,099
YUKA 1500

$1,599

$549typical $1,299–$2,600 · median $1,999$5,999

Sources

Where every figure comes from

  • Navimow X4 · restechtoday.com hands-on of the X430 (zones); robbsutton.com X4 review (zones joined by a path); navimow.com pages loaded only in part
  • AiMowbot C20Z · greenworkstools.ca C20Z product page (CAD price, passage size, one station); greenworkstools.com C20 series page, which says it applies to the C20 only
  • YUKA 3000 · Amazon listing title (30 zones); Mammotion beginner's guide (eu.mammotion.com) for zones and channels
  • YUKA 1500 · support.mammotion.com YUKA specs page (10 zones); Mammotion beginner's guide

Every value was read from a page opened on 2 Oct 2026. Not found means the pages opened say nothing; it does not mean the robot lacks the feature.

Questions

What readers ask

Can these mowers cross a driveway between lawns?

Mammotion says zones can be split by a path or driveway and joined by a channel you drive in its app. A review says the X4 follows a connecting path between zones. Greenworks lists transport paths on its C20 page.

Is a second dock needed to mow both yards?

No page read says so, and none lists a second dock. Greenworks says the C20Z’s single station can be moved if you update its position in the app.

How many zones can each hold?

A review gives the Navimow X4 120 zones. A retail listing gives the YUKA 3000 30, and Mammotion’s support page gives the YUKA 1500 10. Greenworks gives no count for the C20Z.

Common questions

What readers ask about this comparison.

Next up

Sunseeker S4 vs Greenworks C20Z vs Segway i215 vs Airseekers Tron

Read the comparison
Comparison ID: RV–CMP–7485 · Last reviewed Jun 23, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes

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